7th Unit 4 review

Front

What is the formula to find the percentage of a number?

Back

Percentage = (Part / Whole) x 100

Front

If 75% of a number is 48, how do you find the original number?

Back

Divide 48 by 0.75 to find the original number.

Front

What is 5% of a number?

Back

5% of a number can be calculated by multiplying the number by 0.05.

Front

How do you calculate the total cost including a tip?

Back

Total Cost = Meal Cost + (Tip Percentage x Meal Cost)

Front

What is percent error?

Back

Percent Error = |(Estimated Value - Actual Value) / Actual Value| x 100

Front

How do you calculate percent change?

Back

Percent Change = [(New Value - Old Value) / Old Value] x 100

Front

If a meal costs $40.84 and you leave a 20% tip, how much is the tip?

Back

Tip = 0.20 x 40.84 = $8.17

Front

What does an increase of 24% mean in terms of attendance?

Back

It means the new attendance is 24% more than the previous attendance.

Front

How do you find the original number if you know the percentage and the part?

Back

Original Number = Part / (Percentage / 100)